/*
 * Copyright 2011, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


/**
 * @fileoverview This file contains the 'GameSystem' object implemenation.
 */

tdl.provide('ge.gamesystem');

tdl.require('tdl.webgl');

/**
 * This is a base for game systems.
 * @constructor
 */
ge.GameSystem = function() {
  this.components = [];
  this.componentsToRemove = [];
}

ge.GameSystem.prototype.addComponent = function(component) {
  this.components.push(component);
  component.setSystem(this);
};

ge.GameSystem.prototype.removeComponent = function(component) {
  this.componentsToRemove.push(component);
};

ge.GameSystem.prototype.process = function(elapsedTime) {
  var numToRemove = this.componentsToRemove.length;
  if (numToRemove) {
    for (var ii = 0; ii < numToRemove; ++ii) {
      var ndx = this.components.indexOf(this.componentsToRemove[ii]);
      this.components.splice(ndx , 1);
    }
    this.componentsToRemove = [];
  }
};



